FBI Agent Napier is a fictional character portrayed by Greg Serano in the TV series Castle.
In the first episode they appeared in, titled And Justice for All (season 8), they were 43 years old.
They appear in 1 episodes out of a total of 173 aired
Episodes1
And Justice for All
episode S8.E13 february 2016Beckett and the 12th Precinct look into the murder of an English as a Second Language student. When the victim's class won't talk to the police, Castle goes undercover as a French Canadian immigrant and learns the victim was more than he seemed.